10a+2a=-18

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Solution for 10a+2a=-18 equation: 



10a+2a=-18

We move all terms to the left:

10a+2a-(-18)=0

We add all the numbers together, and all the variables

12a+18=0

We move all terms containing a to the left, all other terms to the right

12a=-18

a=-18/12

a=-1+1/2

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